madamPronunciation: /ˈmadəm/Translate madam | into French | into German | into Italian | into Spanish Definition of madam noun 1used to address or refer to a woman in a polite or respectful way:Can I help you, madam? (Madam) used to address a woman at the start of a formal or business letter: Dear Madam, ... (Madam) used before a title to address or refer to a female holder of that position:Madam President 2British informal a conceited or bossy girl or young woman:she’s a proper little madam 3a woman who runs a brothel. Origin: Middle English: from Old French ma dame 'my lady'madam in other Oxford dictionaries Definition of madam in the US English dictionary